Year	days
2003	43.853658536585364
2004	38.916666666666664
2005	33.95348837209303
2006	29.08888888888889
2007	25.07777777777778
2008	21.315217391304348
2009	18.9468085106383
2010	18.074468085106382
2011	16.617021276595743
2012	16.625
2013	15.504081632653062
2014	14.204081632653061
2015	12.261224489795918
2016	11.879591836734694
2017	11.593877551020409
2018	12.552
2019	11.762